#B1D63B#B1D63B

#B1D63B is a very light, vivid yellow-green. Relative luminance 0.578; OKLCH L 82.2% C 0.179 H 122.3°. Best body text is #000000 at 12.55:1 contrast (WCAG AA passes).

Color values

HEX	#B1D63B
RGB	rgb(177, 214, 59)
HSL	hsl(74, 65%, 54%)
HSV	hsv(74, 72%, 84%)
CMYK	cmyk(17.3%, 0%, 72.4%, 16.1%)
CIE-LAB	lab(80.60, -32.65, 68.02)
CIE-LCH	lch(80.60, 75.45, 115.64°)
OKLab	oklab(82.17% -0.0956 0.1513)
OKLCH	oklch(82.17% 0.179 122.3)
XYZ	xyz(42.9680, 57.7559, 13.0212)
Luminance	0.5776 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D63B #603BD6

analogous

#D6AE3B #B1D63B #63D63B

triadic

#B1D63B #3BB1D6 #D63BB1

tetradic

#B1D63B #3BD6AE #603BD6 #D63B63

square

#B1D63B #3BD6AE #603BD6 #D63B63

split-complementary

#B1D63B #3B63D6 #AE3BD6

monochromatic

#657D1A #8EAF25 #B1D63B #C5E16E #D9EBA0

Accessibility & contrast

On white

1.67

#B1D63B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.55

#B1D63B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D63B

12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D63B	#FFFFFF	#000000	##000000
##B1D63B	1.00	1.67	12.55	12.55
#FFFFFF	1.67	1.00	21.00	21.00
#000000	12.55	21.00	1.00	1.00
##000000	12.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E3C91D

Deuteranopia (green-blind)

#DEC849

Tritanopia (blue-blind)

#BACBB8

Achromatopsia (no color)

#C8C8C8

Design tokens & code

CSS

--color: #b1d63b;
/* rgb */ color: rgb(177, 214, 59);
/* oklch */ color: oklch(82.2% 0.179 122.3);

Tailwind

colors: {
  custom: {
    50: '#cce27b',
    500: '#b1d63b',
    950: '#000000',
  },
}

SCSS

$custom: #b1d63b;
$custom-light: #cce27b;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d63b",
  "rgb": {
    "r": 177,
    "g": 214,
    "b": 59
  },
  "hsl": {
    "h": 74.323,
    "s": 65.401,
    "l": 53.529
  },
  "oklch": {
    "l": 0.82165,
    "c": 0.17899,
    "h": 122.3
  },
  "luminance": 0.57756
}

Semantic roles & 50–950 ramp

primary

#B1D63B

secondary

#453184

accent

#3FE868

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D63B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →